CVE-2016-6305 Denial of service in n/a
Remote attackers can cause a denial of service via an infinite loop in OpenSSL's SSL_peek function when processing zero-length records.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-6305?
CVE-2016-6305 is a high-severity denial of service vulnerability in Openssl Openssl, published on 26 Sep 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The ssl3_read_bytes function in record/rec_layer_s3.c in OpenSSL 1.1.0 before 1.1.0a allows remote attackers to cause a denial of service (infinite loop) by triggering a zero-length record in an SSL_peek call.
Weakness: CWE-20
Which versions are affected by CVE-2016-6305?
It affects 1 product.
Products include Openssl Openssl.
How do I fix CVE-2016-6305?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-6305 being exploited?
There is no known exploitation of CVE-2016-6305 in the wild and no public exploit code.
Other vulnerabilities in Openssl Openssl
Sources
Also known as GHSA-jjf8-m6wr-q4f8.